| Harmonic Balancer [message #107003] |
Mon, 29 November 2010 00:04  |
rowing guy
Messages: 31
Registered: October 2009
Location: Outside Philly
Karma: 0
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Howdy All,
Question for you all. How do I know when the (Olds 455) harmonic balancer timing mark is off? I've recently timed my Revcon (Hi Dave) and am curious to know how to tell if it's correct or not.
Did I read anywhere that if the mark fluctuates it's time to replace the balancer?
Thanks.
Scott
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| Re: Harmonic Balancer [message #107015 is a reply to message #107003] |
Mon, 29 November 2010 06:32  |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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| rowing guy wrote on Mon, 29 November 2010 00:04 |
Howdy All,
Question for you all. How do I know when the (Olds 455) harmonic balancer timing mark is off? I've recently timed my Revcon (Hi Dave) and am curious to know how to tell if it's correct or not.
Did I read anywhere that if the mark fluctuates it's time to replace the balancer?
Thanks.
Scott
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Take a look at this photo and the photos before and after it:
http://www.gmcmhphotos.com/photos/showphoto.php?photo=5570&cat=3527
Notice that the slot/keyway where it mounts to the shaft lines up exactly with the center of the large hole, the slash mark on the inner piece, the slash mark on the outer piece, and also the timing mark on the outside circumference.
If these are not all in line then you have a bad / slipped balancer.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] Harmonic Balancer [message #107016 is a reply to message #107015] |
Mon, 29 November 2010 06:37 |
Steven Ferguson
Messages: 3447
Registered: May 2006
Karma: 0
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If your balancer is not maked in this matter there is another way to get
there from here. First though, if your timing is fluctuating, that could be
a sign of a worn distributer and also a sloppy timing chain, both common in
high mileage engines.
Find a stop you can put in the number one spark plug hole. Rotate the
engine by hand until the piston slightly contacts the stop. Mark the
balancer. Rotate the engine in the other direction until the piston contact
the stop, mark the balancer. Your timing mark should be dead center between
these two marks.
On Mon, Nov 29, 2010 at 5:32 AM, Ken Burton <n9cv@comcast.net> wrote:
>
>
> rowing guy wrote on Mon, 29 November 2010 00:04
> > Howdy All,
> >
> > Question for you all. How do I know when the (Olds 455) harmonic
> balancer timing mark is off? I've recently timed my Revcon (Hi Dave) and am
> curious to know how to tell if it's correct or not.
> >
> > Did I read anywhere that if the mark fluctuates it's time to replace the
> balancer?
> >
> > Thanks.
> >
> > Scott
>
> Take a look at this photo and the photos before and after it:
>
> http://www.gmcmhphotos.com/photos/showphoto.php?photo=5570&cat=3527
>
> Notice that the slot/keyway where it mounts to the shaft lines up exactly
> with the center of the large hole, the slash mark on the inner piece, the
> slash mark on the outer piece, and also the timing mark on the outside
> circumference.
>
> If these are not all in line then you have a bad / slipped balancer.
>
> --
> Ken Burton - N9KB
> 76 Palm Beach
> Hebron, Indiana
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Steve Ferguson
Sierra Vista, AZ
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: Harmonic Balancer [message #107032 is a reply to message #107030] |
Mon, 29 November 2010 11:15 |
roy1
Messages: 2126
Registered: July 2004
Location: Minden nevada
Karma: 6
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Senior Member |
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Dan: sounds like someone forgot torque the big bolt on the end of the crank?
Roy
| WD0AFQ wrote on Mon, 29 November 2010 09:02 |
You have the information that you need now to figure it out. I just wanted to say that I had to replace one on the road. That sucker was all over the place. There was no way the timing light would work. When Wally and I got it off, the keyway in the balancer was all wallered out. Had Autozone get me one shipped in and replaced it. Was at the rally in Iowa.
Dan
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Roy Keen
Minden,NV
76 X Glenbrook
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| Re: Harmonic Balancer [message #107055 is a reply to message #107036] |
Mon, 29 November 2010 14:13 |
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cbwoodsr
Messages: 1063
Registered: February 2004
Karma: 0
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Senior Member |
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us Okies understand such stuff..
Some say we aint got no good learning, but what do they know...
CBWood
77 Kingslay
MWC OK
ONLINE PARTS PROGRAM
www.GMCMHParts.com
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